Nudge

Telling an investor to stop procrastinating rarely works. Status quo bias — the tendency to avoid a decision altogether and keep things as they are, especially when a change feels complicated or risky to get wrong — is exactly the kind of bias that resists direct persuasion.

A nudge takes a different route. Instead of arguing someone out of their bias, it redesigns the choice itself — commonly by changing the default option — so that inertia now works in the investor's favour instead of against it. The person keeps complete freedom to choose differently; the nudge just changes what happens if they do nothing.

The workbook gives one concrete illustration, in the discussion of status quo bias: "A simple nudge, as explained by Richard Thaler, resulted into employees enrolling for pension plans, which otherwise had poor enrolment only due to status quo bias."

The mechanism behind that kind of result is the default: when employees have to actively opt in to a pension plan, status quo bias keeps many of them out simply because filling in a form is effort they postpone. Reframe the same choice so employees are enrolled automatically unless they actively opt out, and status quo bias now works the other way — inertia keeps them in.

Illustrative figures, not from the workbook. If an opt-in pension scheme typically sees only around 40% of eligible employees enrol within the first year, switching the same scheme to opt-out enrolment with the same benefits, same employees and same communication can lift participation to 85–90% or more — purely from the change in default, with no change to the underlying financial terms.

Illustrative figures. Meridian Technologies Ltd offers all employees an NPS-linked voluntary pension contribution of 10% of basic pay, matched by the employer. Under the old opt-in form, only about 35% of eligible employees had ever enrolled, despite HR sending reminder emails every quarter — a textbook case of status quo bias.

The HR and investment advisory team redesigns the process: every new and existing employee is automatically enrolled at the 10% contribution rate from the next payroll cycle, with a simple one-page form to opt out if they choose not to participate. Enrolment rises to roughly 92% within two payroll cycles. Nobody was forced to save more, and nobody's compensation changed — the nudge simply moved the effortful action from "choosing to join" to "choosing to leave", and status quo bias did the rest.

Chapter 14 (Behavioural Finance), in the discussion of status quo bias among the emotional biases, cites Richard Thaler's pension-enrolment example directly. Expect a question asking what a nudge is and how it differs from a mandate or a subsidy, and a question linking the nudge concept back to the bias — status quo bias — that makes it necessary.

• A nudge is not a ban, a subsidy, or a mandate. It preserves the investor's free choice; it only changes the effortless default.
• A nudge specifically targets status quo bias — it is the workbook's example of how to counter that particular bias, not a general debiasing tool for every behavioural error.
• Attributing the concept to Richard Thaler is a fact the workbook states directly — expect it as a name-recall distractor against other behavioural economists named elsewhere in the chapter, such as Kahneman or Piotroski.